Role of Polymer Fractionation in Energetic Losses and Charge Carrier Lifetimes of Polymer: Fullerene Solar Cells

Journal article
(Original article)


Publication Details

Author(s): Baran D, Vezie MS, Gasparini N, Deledalle F, Yao J, Schroeder BC, Bronstein H, Ameri T, Kirchartz T, Mcculloch I, Nelson J, Brabec C
Journal: Journal of Physical Chemistry C
Publication year: 2015
Volume: 119
Journal issue: 34
Pages range: 19668-19673
ISSN: 1932-7447
eISSN: 1932-7455
Language: English


Abstract


Nonradiative recombination reduces the open-circuit voltage relative to its theoretical limit and leads to reduced luminescence emission at a given excitation. Therefore, it is possible to correlate changes in luminescence emission with changes in open-circuit voltage and in the charge carrier lifetime. Here we use luminescence studies combined with transient photovoltage and differential charging analyses to study the effect of polymer fractionation in indacenoedithiophene-co-benzothiadiazole (IDTBT):fullerene solar cells. In this system, polymer fractionation increases electroluminescence emission at the same injection current and reduces nonradiative recombination. High-molecular-weight and fractionated IDTBT polymers exhibit higher carrier lifetime-mobility product compared to that of their nonfractionated analogues, resulting in improved solar cell performance. (Graph Presented).



FAU Authors / FAU Editors

Ameri, Tayebeh Dr.
Institute Materials for Electronics and Energy Technology (i-MEET)
Baran, Derya
Institute Materials for Electronics and Energy Technology (i-MEET)
Brabec, Christoph Prof. Dr.
Institute Materials for Electronics and Energy Technology (i-MEET)
Gasparini, Nicola
Institute Materials for Electronics and Energy Technology (i-MEET)


External institutions with authors

Forschungszentrum Jülich / Research Centre Jülich (FZJ)
Imperial College London / The Imperial College of Science, Technology and Medicine


How to cite

APA:
Baran, D., Vezie, M.S., Gasparini, N., Deledalle, F., Yao, J., Schroeder, B.C.,... Brabec, C. (2015). Role of Polymer Fractionation in Energetic Losses and Charge Carrier Lifetimes of Polymer: Fullerene Solar Cells. Journal of Physical Chemistry C, 119(34), 19668-19673. https://dx.doi.org/10.1021/acs.jpcc.5b05709

MLA:
Baran, Derya, et al. "Role of Polymer Fractionation in Energetic Losses and Charge Carrier Lifetimes of Polymer: Fullerene Solar Cells." Journal of Physical Chemistry C 119.34 (2015): 19668-19673.

BibTeX: 

Last updated on 2019-06-08 at 09:05